Section 6 Testing and trials
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Naval Ships, January 2023 - Volume 3 Additional Class Notations - Part 1 Ship Type Capability - Chapter 3 Propulsion and Steering Machinery Redundancy - Section 6 Testing and trials

Section 6 Testing and trials

Parent topic: Chapter 3 Propulsion and Steering Machinery Redundancy

6.1 Sea trials

6.1.1 In addition to the requirements for sea trials in Vol 2, Pt 1, Ch 3, 17.1 Sea trials requirements, trials are to be carried out to demonstrate that when the ship is operating with 50 per cent of the installed prime mover capacity and not less than 50 per cent of the installed propulsion systems, a manoeuvring speed can be maintained with adequate steering capability, where required by the respective class notations.

6.1.2 Trials are to be carried out to demonstrate the ship's steering capability in accordance with the assessment required by Vol 3, Pt 1, Ch 3, 1.2 Documentation required for design review 1.2.4 with one steering system out of action.

6.1.3 Where the Risk Assessment report has identified the need to prove the conclusions, testing and trials are to be carried out as necessary to investigate the following:

  1. The effect of a specific component failure.

  2. The effectiveness of automatic/manual isolation systems.

  3. The behaviour of any interlocks that may inhibit operation of Mobility or Ship Type systems.

6.1.4 During sea trials, the operational envelope(s) is to be determined under conditions detailed in Vol 3, Pt 1, Ch 3, 3.1 Main propulsion machinery or Vol 3, Pt 1, Ch 3, 3.2 Steering machinery as required for the class notation.

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